Study and Realization of Train Positioning System Based on Spread Spectrum Technology

2010 ◽  
Vol 159 ◽  
pp. 720-725
Author(s):  
Hui Bin Xu ◽  
Yong Shen Chen ◽  
Ying Wang
Keyword(s):  
Error Rate ◽  
Spread Spectrum ◽  
Positioning System ◽  
Control Technology ◽  
Transport Delay ◽  
Train Control ◽  
Train Positioning

Communication Based Train Control is the trend of the Automatic Train Control technology. For the problem of train positioning, Study the technology of train positioning Based on the Radio Spread Spectrum ,and proposed the method of obtaining transport delay by calculatiing the Error Rate, further ,model and simulate the positioning system.

Wind compensation for an open field spread spectrum sound-based positioning system using a base station configuration

2014 ◽  
Vol 7 (3) ◽  
pp. 127-132 ◽  
Author(s):  
Slamet Widodo ◽  
Tomoo Shiigi ◽  
Naing Min Than ◽  
Hideo Kikuchi ◽  
Keigo Yanagida ◽  
...  
Keyword(s):  
Open Field ◽  
Spread Spectrum ◽  
Base Station ◽  
Positioning System

scholarly journals Hardware Evaluations of Simple Radio Positioning System Based on Direct Sequence Spread Spectrum

1970 ◽  
Vol 9 (2) ◽  
pp. 93-100
Author(s):  
Shinichi Watanabe ◽  
Minoru Okada
Keyword(s):  
Computer Simulation ◽  
Theoretical Analysis ◽  
Error Rate ◽  
Spread Spectrum ◽  
Computational Cost ◽  
Direct Sequence Spread Spectrum ◽  
Direct Sequence ◽  
Hardware Complexity ◽  
Determination Error ◽  
The Impact

This paper proposes a simple positioning scheme without huge computational cost. The proposed scheme employs a three-element loop array for the transmitter. A Direct-Sequence Spread Spectrum (DS/SS) sequence is transmitted at a frequency of Low Frequency (LF) band. We evaluate location determination error rate by using a computer simulator and theoretical analysis. The theoretical analysis agrees with the simulation result. The difference is at most 1.3 dB at error rate of 10−5. Computer simulation result shows that the proposed technique can identify the region of 2 by 3 meters at the region determination error rate of 10−2. In order to show the hardware complexity requirement for implementing the proposed receiver, the impact of bit width for ADC (Analog-to-Digital Converter), and digital signal processing block to the error rate performance is evaluated by computer simulation. Computer simulation shows that the proposed scheme can be constructed by 2-bit ADC and 5-bit integrate and dump filter.

scholarly journals Bit Error Rate Performance of Spread Spectrum Communication Systems for AWGN Channels

2020 ◽  
Vol 9 (3) ◽  
pp. 277-280
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Spread Spectrum ◽  
Communication Systems ◽  
Digital Communication ◽  
Additive White Gaussian Noise ◽  
Direct Sequence Spread Spectrum ◽  
Rate Performance ◽  
Direct Sequence ◽  
Spread Spectrum Systems

The digital communication technologies have gained immense significance as it provides secure and error free services. One of the major advantages of digital communication is that they are much resistant to transmitted as well as interpreted errors. For ensuring the security of data, the most suitable method is to use spread spectrum technique. The spread spectrum technique has gained immense popularity for use in various systems as the spreading of the spectral bandwidth offer many advantages, including the establishment of secure communications, increasing resistance to interference, noise rejection, and so on. The signals which are modulated by using these techniques cannot be jammed and are very hard to interfere. This paper presents the results of investigation of BPSK based direct sequence spread spectrum systems for Additive White Gaussian Noise (AWGN) and undersea channels. The bit error rate performance of BPSK based direct sequence spread spectrum systems has been simulated for the AWGN channel and the results have been plotted.

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